Outdated intersection sight guidelines lead to unnecessary road risks at high speeds.
The article investigates sight distance at intersections, especially those with stop signs. It looks at the guidelines in the Green Book, compares them to recent research, and suggests updated sight-distance values. The Green Book guidelines are good for speeds of 30-35 mph but too cautious for higher speeds. The new suggested sight distances are more reasonable and vary depending on the speed of the road.
